About: http://webisa.webdatacommons.org/311785971

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	@jtahlborn please read on: A thread that tries to acquire a fair read lock (non-reentrantly) will block if either the write lock is held, or there is a waiting writer thread.
http://www.w3.org/ns/prov#wasQuotedFrom	stackoverflow.com